Justice Department
San Diego concrete buyers may keep three plant choices
The Justice Department says the deal would send CalPortland’s Escondido and Oceanside plants, Vulcan’s Lakeside plant and 15 trucks to Holliday Rock to keep local competition intact.

Federal prosecutors say the proposed settlement would move three ready-mix concrete plants in San Diego County to Holliday Rock, along with 15 trucks and related assets. The aim is to preserve competition for contractors, builders and homeowners.
- Three San Diego concrete plants would be sold to Holliday Rock
- DOJ says the fix is meant to protect prices, quality and service
- The package also includes 15 trucks, leases and related records
- The case centers on ready-mix concrete used for local construction and repairs
- Federal prosecutors are trying to keep San Diego County buyers from ending up with fewer concrete options
Federal prosecutors are trying to keep San Diego County buyers from ending up with fewer concrete options. The Justice Department says CalPortland and Vulcan are two of the area’s largest producers, distributors and sellers of ready-mix concrete, and that their rivalry has helped keep prices lower while preserving better quality and service for customers. Under the proposed settlement, the companies would have to divest three local plants to Holliday Rock, a move meant to keep the market from narrowing further.
Why the market matters
The government has already sued, saying the planned acquisition would violate Section 7 of the Clayton Act. Its case rests on a simple local concern: if two of San Diego County’s biggest concrete rivals are combined without a fix, contractors, builders and homeowners could face a market with less competition and a weaker day-to-day experience when they need ready-mix concrete for construction or repairs.
Ready-mix concrete is not a niche product. It is the material that goes into foundations, driveways, sidewalks and other projects where delays and price swings can quickly turn into real costs for people trying to build or repair something.
A forced handoff
The remedy is specific and physical, not just a promise to behave better. It would require the sale of CalPortland’s Escondido plant and Oceanside plant, along with Vulcan’s Lakeside plant. The package also includes leasehold interests, 15 ready-mix concrete trucks, and certain licenses, permits and records tied to the divested facilities.
DOJ says Holliday Rock is the buyer named for the production assets. That kind of handoff matters because concrete customers do not buy from a spreadsheet. They buy from nearby plants, trucks and dispatch systems that can get a load to a job site on time.
What buyers stand to feel
For local buyers, the real question is whether there will still be enough rivalry to keep service responsive and prices in check. If competition thins out, the pain does not show up in antitrust language first. It shows up in quote sheets, delivery windows and the cost of getting a project moving.
In federal court, the Justice Department filed a proposed final judgment, stipulation and competitive impact statement tied to the planned acquisition of Vulcan Material Company’s California ready-mix concrete operations. The point of the deal, DOJ says, is to keep those effects from landing on contractors and homeowners by forcing the asset sale.